brian- I did not write the genesys backend, but I did write the sanei_magic library that it uses to provide the swdespeck option. It would be interesting to see a low resolution version of the two images, and a log with:
SANE_DEBUG_SANEI_MAGIC=255 combined with whatever the highest debug level genesys will give without crashing. allan On Fri, Jan 28, 2011 at 8:19 AM, Brian Shaver <shakerlxxv at gmail.com> wrote: > I'm using the Lineart mode and trying the --swdespeck option and I've > noticed its leaving a black band along the bottom of the image. > The 2nd issue, is that when I turn the debug up ( SANE_DEBUG_GENESYS=10 ) > and try the same scan, the process seg faults. The following is the stack > from the core: > (gdb) bt > #0 ?0x00007fa3e4ce35c8 in sanei_genesys_write_pnm_file > (filename=0x7fa3e4cec479 "unprocessed.pnm", > ?? ?data=0x7fa3e2267000 <Address 0x7fa3e2267000 out of bounds>, depth=1, > channels=1, pixels_per_line=2360, lines=3188) > ?? ?at genesys_low.c:144 > #1 ?0x00007fa3e4caa60f in genesys_buffer_image (s=0x99e340) at > genesys.c:6895 > #2 ?0x00007fa3e4caccab in sane_genesys_start (handle=0x99e340) at > genesys.c:7864 > #3 ?0x00007fa3eae33ae2 in sane_dll_start (handle=0x99b2a0) at dll.c:1263 > #4 ?0x00007fa3eae20d38 in sane_start (h=0x99b2a0) at dll-s.c:48 > #5 ?0x0000000000406d1c in main (argc=13, argv=0x7fffe2b73a08) at > scanimage.c:2283 > ?The code is trying to write out a file ( unprocessed.pnm ) containing ... I > think the Lineart converted data before performing the despeck process. > I'd be happy to help with a fix for this, or provide further information or > testing. > Thanks, > Brian .. > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > ? ? ? ? ? ? to sane-devel-request at lists.alioth.debian.org > -- "The truth is an offense, but not a sin"